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Finding the Fourth Proportional to 768,801.38, 1,060,947.78 and 429,281.78

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Solution

The fourth proportional to 768,801.38, 1,060,947.78 and 429,281.78 is: 592,409.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,801.38 : 1,060,947.78 = 429,281.78 : x
  2. Step 2: Convert to fraction form
    768,801.38/1,060,947.78 = 429,281.78/x
  3. Step 3: Cross multiply
    768,801.38x = 1,060,947.78 × 429,281.78
  4. Step 4: Simplify right side
    768,801.38x = 455,445,551,485.45
  5. Step 5: Solve for x
    x = 455,445,551,485.45/768,801.38
  6. Step 6: Final answer
    x = 592,409.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.